This issue has probably been long-settled. However, I may as well wrap this thread up by adding some thoughts about the picture.

This image is from the scene in "The Ride" (6a) in which Christopher recalls the day when he reached out to Tony regarding Adriana's betrayal. It would seem that, given the image's publication around the time of "Long Term Parking," that the scene was indeed filmed with the intention of including it in the episode. I would suggest that this was a creative decision that was meant to build suspense at the end of "Long Term Parking," and that the excess footage was later tacked on to "The Ride" in the form of a flashback.

I'm sure many of us are happy with the decision--the moments between Christopher's epiphany at the gas station and Adriana's shooting were some of the most dread-filled in the entire series.